package com.hspedu.stringbuffer_;

/**
 * @author 谷其昊
 * @version 1.0
 * @date 2022/2/4
 * @time 18:41
 */
public class Test01 {
    public static void main(String[] args) {
        StringBuffer sb = new StringBuffer("hsp");
        System.out.println(sb.insert(1, "a"));

        StringBuffer stringBuffer = new StringBuffer(null);

    }
}
